You call it collusion, we call it obeying market realities! As in, capitalists invent a reality and the people obey it.

Thanks for the term. I came to that conclusion on my own, but now I can actually look into it

the latter example there actually isn't collusion it's competition. adulteration is the natural consequence of unregulated free market competition. Everyone competes to be the bottom of the market so they can put everyone else out of business and to do so they cut costs as much as possible. And then once the market is dominated they raise prices without improving the standard of product